Progressiv Fork Spring Kit

There are no two opinions about the quality and functionality of Wirth's progressive fork springs for motorbikes. They have always been top class. And they continue to be so! Especially in their current, polished version. There is practically "zero" friction in the telescopic fork legs, which means there is no "noise" even under the most demanding conditions.

With progressive fork springs from Wirth, your telescopic fork is finally the way you always wanted it to be: the fork responds well and becomes harder with increasing load, it no longer dips uncomfortably when braking and yet is not stubborn. Slight bumps are ironed out and hard impacts are handled with ease.

Wirth fork springs are made of polished, surface-compacted special steel, precisely tailored to the respective vehicle type and available for a wide range of vehicles.

• Better contact with the road, more comfortable response
• No more bottoming out, less brake dive
• Don't get annoyed anymore by rodeo rides with your old, linearly sprung fork.
• Any air support that may have been present previously is eliminated
• Easy to install yourself
• With ABE for Germany

Please note:
Contrary to any vehicle manufacturer specifications, Wirth fork springs require fork oils with a viscosity of SAE 10W.
Only for a few, expressly named exceptions does Wirth recommend the use of fork oils with a viscosity of SAE 15W.